Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
3. Transmission
4. Running gear
4.1. Wheels and tires
4.1.1. General information on wheels and tires
4.1.2. Specifications for re-equipment of disks and tires
4.1.3. Indexes of speed of tires
4.1.4. Marking on disks
4.1.5. Compound disks
4.1.6. Wear and hodimost of tires
4.1.7. Wear of high-speed tires
4.1.8. Service of tires
4.1.9. Evenly worn-out tires
4.1.10. Measurement of height of the drawing of a protector
4.1.11. Unilateral wear
4.1.12. Diagonal uneven wear
4.1.13. Noise of swing of tires
4.1.14. Balancing
4.1.15. Radial and side beating of wheels and tires
4.1.16. Check of a radial and side beating of a disk with the tire by means of the indicator of hour type for tires V.A.G 1435
4.1.17. Minimization
4.1.18. Side withdrawal of the car
4.1.19. Elimination of side withdrawal
4.1.20. Damages of tires
4.1.21. Design of the radial tire
4.1.22. Loss of pressure of air in tires
4.1.23. Damages of tires because of mistakes when mounting (assembly damages)
4.1.24. Marking of a sidewall of the tire
4.1.25. Shift of wheels
4.1.26. Instructions on replacement and installation of wheels
4.1.27. Change of tires
4.1.28. Removal and installation of the case of the metal gate
4.2. General information about a running gear of the car
4.3. Repair of a suspension bracket of forward wheels
4.4. Back suspension bracket
4.5. Tables
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment


4.1.24. Marking of a sidewall of the tire

Fig. 4.29. Marking of a sidewall of the tire: 1 – dimension marking; 2 – producer (trade name); 3 – designations of the drawing of a protector; 4 – designation of the tubeless tire; 5 – radial design; 6 – the instruction on execution "with protection of a rim "; 7 – date of production; 8 – number of the certificate = designation of permission; 9 – manufacturing country; 10 – internal code of the drawing of a protector DUNLOP; 11 – DOT – Department of Transportation; 12 – DOT code; 13 – the most permissible load and the most admissible pressure of air; 14 – quantity of layers in the middle of a protector and in a sidewall, and also the indication of material; 15 – position of indicators of wear of TWI (Tread Wear Indicator); 16 – relative service life – wear resistance; 17 – assessment of efficiency of braking on a wet paving of A, B or C; 18 – assessment of resistance to temperatures of A, B or C; 19 – instructions on safety of operation or installation of the tire; 20 – the instruction on "an extralight design "; 21 – the ordered direction of rotation of the tire; 22 – designation of compliance to standards of Inmetro

The tire "Dunlop SP Sport 9000" is given in an example kachastvo, in the figure 4.29.

Explanation of marking of tires
Watch explanations of marking of tires in tables 4.5-4.7.

Rubber gate

Fig. 4.30. Rubber gate: 1 – gate case; 2 – gate zolotnik; 3 – cap

Watch rice 4.30.

Gate case
The rubber gate for tubeless tires is executed so that to pressurize an opening in a disk rim. Elastic material of the rubber case strong nestles in a rim opening.
At the twisted metal gates rubber laying condenses a joint with a rim. Regional surfaces of an opening of the gate are at the same time sealing. Therefore on them there should not be a rust, pollution and damages.

Gate zolotnik
The major task in the gate is carried out by a zolotnik. It pressurizes and allows to regulate air pressure. The small dish-shaped sealant on a zolotnik provides tightness only in that a case if on it there are no pollution and moisture. In compressors for a rating of tires there should not be water and oil.

On the gate the cap has to be always fastened. It prevents hit of dirt in the gate. At existence of pollution in the gate they, at a tire rating, would get on a plate sealant of the gate and to cause leakage.
At each new installation of the tire the gate needs to be replaced.
When driving without caps on gates there is a danger hit of dirt in them. It will lead to slow sinking of the tire that can become subsequently a tire cause of destruction.

Tightness is provided only at densely fastened cap.

4.1.23. Damages of tires because of mistakes when mounting (assembly damages)

4.1.25. Shift of wheels